Bibliography

France Enviroment: http://www.radford.edu/~wkovarik/envhist/
France Climate: http://www.phrasebase.com/countries/france/
France Trade: http://www.state.gov/r/pa/ei/bgn/3842.htm

Sudan Enviroment: http://www.indexmundi.com/sudan/environment_current_issues.html
Sudan Climate: http://countrystudies.us/sudan/33.htm
Sudan Hostile Neighbors: http://www.state.gov/r/pa/ei/bgn/5424.htm
Friendly trade: http://www.nationsencyclopedia.com/Africa/Sudan-FOREIGN-TRADE.html